Siemens SINUMERIK 828D Function Manual page 450

H2: Auxiliary function outputs to PLC
8.13 Block-search response
Behavior regarding spindle auxiliary functions
Following the start of the search, all the channels collect the auxiliary functions in the channel variables on a
group-specific basis. In order to perform a far-reaching restoration of the spindle state in the SERUPRO target
block using the collected auxiliary functions, the last active auxiliary function in any group of spindle auxiliary
functions must characterize the state of the spindle in the target block. In the case of transitions in spindle states,
obsolete auxiliary functions are deleted or, if necessary, implicit auxiliary functions are entered.
All the spindle auxiliary functions from the global auxiliary function list must correspond to the spindle states
achieved in the target block to enable the auxiliary functions to be processed when the list is output and to ensure
that no alarms or unintended spindle states are requested which could prevent the continuation of the part
program.
This affects the groups of auxiliary functions for any spindle configured in the system, whereby the spindle
number corresponds to an auxiliary function's address extension.
Group a: M3, M4, M5, M19, M70
Group b: M40, M41, M42, M43, M44, M45
Group c: S
Deleting obsolete auxiliary functions
In the functions below, the auxiliary functions from group a are deleted for the spindle concerned:
• For the following spindle when a generic coupling, such as COUPON, TRAILON, EGON, etc. is switched on
Generating implicit auxiliary functions from group a
In the functions below, the auxiliary functions from group a are generated implicitly for the spindle concerned:
• For the following spindle when the synchronous spindle coupling is switched off
- COUPOF generates M3, M4 and S or M5 in the main run depending on the coupling situation.
- COUPOF(S<n>, S<m>, POS) and COUPOFS(S<n>, S<m>, POS, POS) generate M3, M4 and S.
- COUPOFS generates M5 in the main run.
- COUPOFS(S<n>, S<m>, POS) generates M19 in the main run.
The implicit M19 ("SPOS[<address extension>] = IC(0)" in the ASUB) activates the positioning mode
without a traversing motion.
• M70 is generated during a traversing motion as an axis or during the transition to axis mode by selecting a
transformation during which the spindle enters as an axis.
• M5 is generated during SPCOF.
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Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Basic Functions